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How to Set Up WordPress Gmail SMTP for Sending Emails

Blog post from Mailtrap

Post Details
Company
Date Published
Author
Ketevan Bostoganashvili
Word Count
2,136
Company Posts That Month
36
Language
English
Hacker News Points
-
Post removed?
No
Summary

WordPress’s default wp_mail() and PHP mail functions often lack authentication and face hosting restrictions, which can cause transactional messages such as password resets and order confirmations to be filtered as spam or discarded. Using Gmail SMTP through plugins such as WP Mail SMTP or Easy WP SMTP replaces this default method with authenticated sending; the recommended WP Mail SMTP setup uses the Gmail API, requiring a Google Cloud project, enabled Gmail API, OAuth consent configuration, client credentials, and authorization, while a simpler but less secure alternative uses Gmail SMTP credentials and an app password. Free Gmail accounts are limited to 500 emails daily and lack custom-domain DNS control, whereas Google Workspace supports custom domains and SPF, DKIM, and DMARC authentication but is limited to 10,000 daily emails. For higher-volume transactional email, the guide recommends scalable third-party providers such as Mailtrap, which offers SMTP and API integration, domain verification, deliverability tools, analytics, and testing capabilities. It also notes that SMTP can be configured manually without a plugin through WordPress files, though this requires more technical work, and advises sending test emails and reviewing available logs to confirm that the integration functions correctly.

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